8 Lay-Up and Recommissioning Operator Manual for Gasoline Generators
page 40
8.6
Lay-Up Prep: Raw Water Cooling Circuit
1.
Close the intake through-hull seacock and remove the raw water intake hose.
2.
Place the end of this hose into a five-gallon bucket of clean fresh water.
3.
Before starting the engine, check the zinc anode found in the primary heat exchanger on the engine and
clean or replace it as required.
4.
Clean any zinc debris from inside the heat exchanger where the zinc anode is located. Also clean the raw
water strainer.
5.
Start the engine and allow the raw water pump to draw the fresh water through the system. When the
bucket is empty, stop the engine.
6.
Refill the bucket with an antifreeze solution that is slightly stronger than needed for winter freeze protection
in your area.
7.
Start the engine and allow the mixture to be drawn through the raw water system. When the bucket is
empty, stop the engine. This antifreeze mixture should protect the raw water circuit from freezing during the
winter lay-up, as well as providing corrosion protection.
8.
Remove the impeller from your raw water pump. Be ready to capture and to contain any antifreeze mixture
that may spill.
9.
Examine the impeller. Acquire a replacement, if needed, and a cover gasket. Replace only the cover and
gasket. Do not replace the impeller (into the pump) until recommissioning.
8.7
Lay-Up Prep: Intake Manifold
Clean the filter screen in the flame arrestor, and place a clean cloth lightly soaked in lube oil around the flame
arrestor to block any opening. Place an oil-soaked cloth in the through-hull exhaust port. Make a note to
remove cloths prior to startup.
WARNING: Lead acid batteries emit hydrogen, a highly-explosive gas, which can be ignited by electrical arcing or a
lighted cigarette, cigar, or pipe. Do not smoke or allow an open flame near the battery being serviced. Shut OFF all
electrical equipment in the vicinity to prevent electrical arcing during servicing.
8.8
Lay-Up Prep: Spare Parts
Lay-up time provides an opportunity to inspect your Westerbeke engine to see if external items such as drive
belts or coolant hoses need replacement. Check your basic spares kit and order items not on hand, or replace
those items used during the lay-up, such as filters and zinc anodes. See 2.10 Ordering Parts.
8.9
How to Recommission After a Lay-Up
The recommissioning of your Westerbeke engine after a seasonal lay-up generally follows the same steps as
those described in 4.10 Checklist: Initial Startup. However, some of the lay-up procedures will need to be
counteracted before starting the engine.
1.
Remove the oil-soaked cloths from the intake manifold.
2.
Remove the raw water pump cover and gasket and discard the old gasket. Install the raw water pump
impeller removed during lay-up (or a replacement, if required).
3.
Install the raw water pump cover with a new cover gasket.
4.
Reinstall the batteries that were removed before the lay-up period, and reconnect the battery cables.
5.
Clean the terminals, tighten the connections, and verify that the batteries are fully charged.
6.
Remove the spark plugs, wipe clean, rotate the crankshaft two full revolutions, re-gap, and re-install to
proper tightness. Connect the high-tension leads onto each spark plug.
7.
Start the engine and follow the initial startup procedures in 4.10 Checklist: Initial Startup.
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